Pap-Flon Engineering Co. Pvt. Ltd. Offers Vapour Column for Atmospheric or Azeotropic Distillation. Pap-Flon Engineering Co. Pvt. Ltd. Manufactures Lined Carbon Steel and Stainless Steel fabricated Components with fluoro polymer resins. The Vapour Column for Atmospheric or Azeotropic Distillation is available in size of 20 NB Dia, X 4500 mm length.